How do I make a default selection in ComboBox ?

Hello people,

Am facing a problem while trying to make a default selection in a ComboBox while loading a page. I mean, I have to make one item as selected, by default, while loading the page. I cant use setValue() method as it can take only Strings and not variables. But based on the back-end value I need to make one of the items in the list as selected by default. How do I do that ? Please help.

Thanks for the response, but I guess, you didnt get the question properly (Or I didnt put it in a proper way ).... I can set the value by setValue( String value )... But my problem is I dont know the value here.. Its coming from the back-end bean.. So I have to use a variable, not a static string. How do I do that ?